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Journal articles on the topic 'Variable renewable energy (VRE)'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2025

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1

López Prol, Javier, and Wolf-Peter Schill. "The Economics of Variable Renewable Energy and Electricity Storage." Annual Review of Resource Economics 13, no. 1 (2021): 443–67. http://dx.doi.org/10.1146/annurev-resource-101620-081246.

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The transformation of the electricity sector is a central element of the transition to a decarbonized economy. Conventional generators powered by fossil fuels have to be replaced by variable renewable energy (VRE) sources in combination with electricity storage and other options for providing temporal flexibility. We discuss the market dynamics of increasing VRE penetration and its integration in the electricity system. We describe the merit-order effect (the decline of wholesale electricity prices as VRE penetration increases) and the cannibalization effect (the decline of VRE value as its pe

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Imcharoenkul, Veeraya, and Surachai Chaitusaney. "Optimal Variable Renewable Energy Generation Schedules Considering Market Prices and System Operational Constraints." Energies 14, no. 17 (2021): 5320. http://dx.doi.org/10.3390/en14175320.

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The maximization of output from variable renewable energy (VRE) sources considering system operational constraints (SOCs) is a traditional method for maximizing VRE generators’ profits. However, in wholesale electricity markets, VRE participation tends to reduce marginal prices (MP) because of its low marginal costs. This circumstance, called the “merit-order effect” (MOE), reduces the generators’ profits. Thus, the traditional method is possibly no longer the best and only method to maximize the generators’ profits. Moreover, the VRE support schemes also affect MP, making MOE more severe. VRE

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Algarvio, Hugo, Fernando Lopes, António Couto, Ana Estanqueiro, and João Santana. "Variable Renewable Energy and Market Design: New Products and a Real-World Study." Energies 12, no. 23 (2019): 4576. http://dx.doi.org/10.3390/en12234576.

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Most existing energy markets (EMs) were not designed to take into account an active participation of variable renewable energy (VRE). This situation results typically in imbalances and substantial costs in balancing markets. Such costs are reflected both in the energy and the VRE parts of the consumer tariffs. Both appropriate market products and new elements of market design may largely facilitate the large-scale integration of VRE in EMs. Accordingly, this article presents a new bilateral energy contract and introduces two new marketplaces that can contribute to reduce the imbalances resulti

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Lee, Jinyeong, Jaehee Lee, and Young-Min Wi. "Impact of Revised Time of Use Tariff on Variable Renewable Energy Curtailment on Jeju Island." Electronics 10, no. 2 (2021): 135. http://dx.doi.org/10.3390/electronics10020135.

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Jeju Island announced the “Carbon Free Island (CFI) Plan by 2030” in 2012. This plan aims to replace conventional generators with distributed energy resources (DERs) up to a level of 70% by 2030. Akin to Jeju Island, as DERs have been expanded in islanded power systems, variable renewable energy (VRE) has become a significant component of DERs. However, VRE curtailment can occur to meet power balance, and VRE curtailment generally causes energy waste and low efficiency, so it should be minimized. This paper first presents a systematic procedure for estimating the annual VRE curtailment for the

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Lee, Jinyeong, Jaehee Lee, and Young-Min Wi. "Impact of Revised Time of Use Tariff on Variable Renewable Energy Curtailment on Jeju Island." Electronics 10, no. 2 (2021): 135. http://dx.doi.org/10.3390/electronics10020135.

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Jeju Island announced the “Carbon Free Island (CFI) Plan by 2030” in 2012. This plan aims to replace conventional generators with distributed energy resources (DERs) up to a level of 70% by 2030. Akin to Jeju Island, as DERs have been expanded in islanded power systems, variable renewable energy (VRE) has become a significant component of DERs. However, VRE curtailment can occur to meet power balance, and VRE curtailment generally causes energy waste and low efficiency, so it should be minimized. This paper first presents a systematic procedure for estimating the annual VRE curtailment for the

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Pratama, Yudhi, Nofriyanto Eka Putra, and Atin Yudhi Wibowo. "Analisa Kuota Maksimum EBT Intermitten Pada Tahun 2025 Untuk Menjaga Kestabilan Frekuensi Di Sistem Sumatera." Jurnal Energi dan Ketenagalistrikan 1, no. 1 (2023): 30–36. http://dx.doi.org/10.33322/juke.v1i1.12.

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The problems of climate change and global warming are pushing electricity providers to switch to using renewable energy that is clean and eco friendly. However, the limitations of stable renewable energy sources make variable renewable energy (VRE) a viable solution. VRE on a system will affect the stability of the system, therefore it is necessary to analyze the calculation of the maximum value of VRE capacity that can be connected to a system and maintain system stability. To calculate the maximum value of a VRE that can be connected to the system is based on the frequency stability of the p

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Juma, Denis, Josiah Munda, and Charles Kabiri. "Power-System Flexibility: A Necessary Complement to Variable Renewable Energy Optimal Capacity Configuration." Energies 16, no. 21 (2023): 7432. http://dx.doi.org/10.3390/en16217432.

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Comprehending the spatiotemporal complementarity of variable renewable energy (VRE) sources and their supplemental ability to meet electricity demand is a promising move towards broadening their share in the power supply mix without sacrificing either supply security or overall cost efficiency of power system operation. Increasing VRE share into the energy mix has to be followed with measures to manage technical challenges associated with grid operations. Most sub-Saharan countries can be considered ‘greenfield’ due to their relatively low power generation baseline and are more likely to be ad

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Rakhmonov, I. U., and K. M. Reymov. "Statistical models of renewable energy intermittency." E3S Web of Conferences 216 (2020): 01167. http://dx.doi.org/10.1051/e3sconf/202021601167.

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One of the big mitigating factors of intermittency is the smoothing effect of geographical distribution of variable renewable energy (VRE ) plants on the aggregate power output of VRE generation on a utility network. The greater the distance between two renewable plants, the less likely their output is to be affected by the same weather event (e.g. cloud coverage, storms, dust storms). This is similarly the case for smaller timescales. Further, different technologies can often be uncorrelated or even negatively correlated (e.g. wind and solar) which reduces the integration cost. In this articl

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Cho, Jai-Oan, Jeong Ik Lee, and Staffan Qvist. "Global Residual Demand Analysis in a Deep Variable Renewable Energy Penetration Scenario for Replacing Coal: A Study of 42 Countries." Energies 17, no. 6 (2024): 1480. http://dx.doi.org/10.3390/en17061480.

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This study analyzes the residual demand curves of 42 countries under five scenarios with varying variable renewable energy (VRE) levels to observe how replacing coal with VRE can alter the demand curve. Using 2018 demand data, the residual demand was calculated and analyzed by subtracting the VRE supply curve from the demand curve. The operational requirements for low-carbon load-following sources amid high VRE penetration are examined. Key findings indicate that substantial peak residual demand persists even with 70% energy from VREs, emphasizing the need for significant load-following resour

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Tveten, Åsa Grytli, Jon Gustav Kirkerud, and Torjus Folsland Bolkesjø. "Integrating variable renewables: the benefits of interconnecting thermal and hydropower regions." International Journal of Energy Sector Management 10, no. 3 (2016): 474–506. http://dx.doi.org/10.1108/ijesm-08-2014-0006.

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Purpose This study aims to investigate the effects of thermal–hydro interconnection on the revenues, market value and curtailment of variable renewable energy (VRE). The increasing market shares of VRE sources in the Northern European power system cause declining revenues for VRE producers, because of the merit-order effect. A sparsely studied flexibility measure for mitigating the drop in the VRE market value is increased interconnection between thermal- and hydropower-dominated regions. Design/methodology/approach A comprehensive partial equilibrium model with a high spatial and temporal res

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SAPUTRA, DWI CAHYA AGUNG, and IWA GARNIWA. "Analisis Fleksibilitas Sistem Tenaga Listrik Jawa, Madura, dan Bali karena Integrasi yang Masif dari Pembangkit VRE." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 12, no. 3 (2024): 640. http://dx.doi.org/10.26760/elkomika.v12i3.640.

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ABSTRAKIntegrasi Variable Renewable Energy (VRE), dengan karakteristik intermittent dan ketidakpastian yang tinggi, yang masif ke sistem JAMALI berpotensi mengganggu keandalan dan meningkatkan kompleksitas operasional sistem tenaga listrik. Kendala-kendala tersebut dapat dimitigasi apabila sistem memiliki fleksibilitas yang memadai. Analisis fleksibilitas, dengan bantuan IRENA FlexTool, dilakukan untuk mengkaji fleksibilitas sistem akibat meningkatnya bauran VRE di sistem JAMALI yang dilakukan secara bertahap, yaitu 5% di tahun 2030, 37% di tahun 2040, dan 52% di tahun 2050. Dari hasil analisi

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Yousef, Latifa A., Hibba Yousef, and Lisandra Rocha-Meneses. "Artificial Intelligence for Management of Variable Renewable Energy Systems: A Review of Current Status and Future Directions." Energies 16, no. 24 (2023): 8057. http://dx.doi.org/10.3390/en16248057.

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This review paper provides a summary of methods in which artificial intelligence (AI) techniques have been applied in the management of variable renewable energy (VRE) systems, and an outlook to future directions of research in the field. The VRE types included are namely solar, wind and marine varieties. AI techniques, and particularly machine learning (ML), have gained traction as a result of data explosion, and offer a method for integration of multimodal data for more accurate forecasting in energy applications. The VRE management aspects in which AI techniques have been applied include op

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Ortiz, Carlos. "Thermochemical Energy Storage Based on Carbonates: A Brief Overview." Energies 14, no. 14 (2021): 4336. http://dx.doi.org/10.3390/en14144336.

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Zaheb, Hameedullah, Mikaeel Ahmadi, Nisar Ahmad Rahmany, Mir Sayed Shah Danish, Habibullah Fedayi, and Atsushi Yona. "Optimal Grid Flexibility Assessment for Integration of Variable Renewable-Based Electricity Generation." Sustainability 15, no. 20 (2023): 15032. http://dx.doi.org/10.3390/su152015032.

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This study delves into power system flexibility, with a keen focus on the integration of variable renewable electricity generation into power grids. Two scenarios were analyzed. The base scenario revealed an aging grid, insufficient generation capacity, frequent outages, and little renewable energy generation (1.9%), along with a significant (71.23%) loss of load. In contrast, the investment scenario presented solutions including raising VRE capacity to 44%, adding 1000 MW capacity transmission lines, installing 200 MW capacity grid-scale battery storage, and technological enhancements. These

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Xu, Ruhang, Zhilin Liu, and Zhuangzhuang Yu. "Exploring the Profitability and Efficiency of Variable Renewable Energy in Spot Electricity Market: Uncovering the Locational Price Disadvantages." Energies 12, no. 14 (2019): 2820. http://dx.doi.org/10.3390/en12142820.

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While variable renewable energy (VRE) has been developed for decades, VRE market participation is developing relatively slowly, despite the potential economic efficiency it may bring. This paper tries to specify the efficiency of VRE in a deregulated pool-based electricity market. Based on standard pool-based market design, this paper built a direct current optimal power flow (DC-OPF) based simplified 2-settlement spot electricity market model conjugating electricity and ancillary service clearing. To address the outcomes of the imperfect market in the real world, this paper studied the conseq

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Selänniemi, Andreij, Magnus Hellström, and Margareta Björklund-Sänkiaho. "Long-Duration Energy Storage—A Literature Review on the Link between Variable Renewable Energy Penetration and Market Creation." Energies 17, no. 15 (2024): 3779. http://dx.doi.org/10.3390/en17153779.

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The relationship between a region’s dependency on variable renewable energy (VRE) and the viability of long-duration energy storage (LDES) technologies is recognised through various electricity grid modelling efforts in the contemporary literature. Numerous studies state a specific VRE penetration level in total electricity generation as an indicator of the emergence of an LDES market. However, there is considerable variability across studies when comparing VRE penetration levels in conjunction with LDES technology utilisation, and significant diversity exists in electricity grid modelling app

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Algarvio, Hugo, Fernando Lopes, and João Santana. "Strategic Operation of Hydroelectric Power Plants in Energy Markets: A Model and a Study on the Hydro-Wind Balance." Fluids 5, no. 4 (2020): 209. http://dx.doi.org/10.3390/fluids5040209.

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The European Union defined ambitious targets for the production of energy from renewable energy sources. Most European markets trade now high levels of variable renewable energy (VRE). Renewable generation increases the variability and uncertainty of the net-load (i.e., demand minus VRE). To a large extent, this variability and uncertainty can be compensated by hydroelectric power plants. Typically, hydro power producers (HPPs) consider the periods of time with low market prices (and normally low demand and/or high VRE production) to pump, and the periods with high market prices (and normally

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Algarvio, Hugo. "The Role of Local Citizen Energy Communities in the Road to Carbon-Neutral Power Systems: Outcomes from a Case Study in Portugal." Smart Cities 4, no. 2 (2021): 840–63. http://dx.doi.org/10.3390/smartcities4020043.

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Global warming contributes to the worldwide goal of a sustainable carbon-neutral society. Currently, hydroelectric, wind and solar power plants are the most competitive renewable technologies. They are limited to the primary resource availability, but while hydroelectric power plants (HPPs) can have storage capacity but have several geographical limitations, wind and solar power plants have variable renewable energy (VRE) with stochastic profiles, requiring a substantially higher investment when equipped with battery energy storage systems. One of the most affordable solutions to compensate th

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Do, Insu, Siyoung Lee, Gab-Su Seo, and Sungsoo Kim. "An Analysis of the Effects of Renewable Energy Intermittency on the 2030 Korean Electricity Market." Energies 16, no. 10 (2023): 4189. http://dx.doi.org/10.3390/en16104189.

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Republic of Korea has unique geographical characteristics similar to those of an island, resulting in an isolated power system. For this reason, securing sufficient operating reserves for the system’s stability and reliability in the face of the intermittency of increasing variable renewable energy (VRE) is paramount, and this will pave the way to achieving the nation’s decarbonization target and carbon neutrality. However, the current reserve-operation method in Republic of Korea does not take into account energy-system conditions, such as the intermittency of the VRE. Therefore, this paper p

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Ayyaswamy, Abhinand, Navneet Goswami, Bairav Sabarish Vishnugopi, and Partha P. Mukherjee. "Examining the Upstream Renewable Energy Source Variability on PEM Water Electrolyzer Behavior." ECS Meeting Abstracts MA2023-01, no. 36 (2023): 1957. http://dx.doi.org/10.1149/ma2023-01361957mtgabs.

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Hydrogen bears a unique prospect to decarbonize sectors like electricity, transportation, manufacturing, and construction simultaneously in an economical path toward mitigating global warming. A proton-exchange membrane water electrolyzer (PEMWE) coupled with an upstream variable renewable energy (VRE) source is a promising candidate for green hydrogen production. However, the seasonal variation and uncertainties in available power from upstream VREs vary geographically and diurnally, posing various challenges to the operational limits of PEMWEs. It is imperative to understand the stochastic v

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Kim, Young-Jin, Hakju Lee, Sungwook Hwang, et al. "Research Needs for Realization of Zero-Carbon Power Grids with Selected Case Studies." Applied Sciences 12, no. 5 (2022): 2533. http://dx.doi.org/10.3390/app12052533.

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The attainment of carbon neutrality requires a research agenda that addresses the technical and economic challenges that will be encountered as we progress toward 100% renewable electricity generation. Increasing proportions of variable renewable energy (VRE) sources (such as wind turbines and photovoltaic systems) render the supply-and-demand balance of VRE-dominated power grids difficult. The operational characteristics and effects of VRE inverters also require attention. Here, we examine the implications of the paradigm shift to carbon neutrality and summarize the associated research challe

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TOBO, Makoto, Tsutomu KAWAMIZU, Takahiro YAMANA, Naoki TAKANAWA, Kazutaka OBARA, and Taisuke YOSHIOKA. "Thermal Energy Storage (TES) for Enhancing Electricity Grid Capability of Accommodating Variable Renewable Energy (VRE)." Proceedings of the National Symposium on Power and Energy Systems 2022.26 (2022): D242. http://dx.doi.org/10.1299/jsmepes.2022.26.d242.

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Bunodiere, Alex, and Han Soo Lee. "Renewable Energy Curtailment: Prediction Using a Logic-Based Forecasting Method and Mitigation Measures in Kyushu, Japan." Energies 13, no. 18 (2020): 4703. http://dx.doi.org/10.3390/en13184703.

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High variable renewable energy (VRE) penetration led to the first-ever VRE curtailment in Japan, occurring in Kyushu in October 2018. Since then, there has been an average of 3% solar curtailment, with a peak of 13.7% in April 2019, resulting in approximately ¥9.6 billion of wasted energy. The VRE curtailment is expected to worsen as VRE penetration continues to increase along with nuclear energy increment in line with Japan’s 2030 energy goals. To prevent this curtailment and increase energy stability, a novel, logic-based forecasting method using hourly supply/demand data was developed. Init

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Chen, Ning, Caixia Wang, Qiuxia Yu, Hao Fan, Qionghui Li, and Wei Yuan. "Study on the Influence of Energy Storage on the VRE Station’s Utilization Rate." Journal of Physics: Conference Series 2260, no. 1 (2022): 012035. http://dx.doi.org/10.1088/1742-6596/2260/1/012035.

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Abstract With the proposal of carbon peak and neutrality goals, variable renewable energies (VREs mainly wind power and solar) will usher in fast development. To ensure the effective consumption of VREs, it is necessary to improve the flexibility of power system. With the high proportion of VREs, the risk of insufficient flexibility of power system increases, and serious abandonment of VREs may occur. Energy storage is an effective means to improve system flexibility and increase VREs’ utilization rate. At present, many provinces in China have issued requirements for the allocation of energy s

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Lewis, Donovin D., Aron Patrick, Evan S. Jones, et al. "Decarbonization Analysis for Thermal Generation and Regionally Integrated Large-Scale Renewables Based on Minutely Optimal Dispatch with a Kentucky Case Study." Energies 16, no. 4 (2023): 1999. http://dx.doi.org/10.3390/en16041999.

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Decarbonization of existing electricity generation portfolios with large-scale renewable resources, such as wind and solar photo-voltaic (PV) facilities, is important for a transition to a sustainable energy future. This paper proposes an ultra-fast optimization method for economic dispatch of firm thermal generation using high granularity, one minute resolution load, wind, and solar PV data to more accurately capture the effects of variable renewable energy (VRE). Load-generation imbalance and operational cost are minimized in a multi-objective clustered economic dispatch problem with various

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Kataoka, Ryosuke, Kazuhiko Ogimoto, and Yumiko Iwafune. "Marginal Value of Vehicle-to-Grid Ancillary Service in a Power System with Variable Renewable Energy Penetration and Grid Side Flexibility." Energies 14, no. 22 (2021): 7577. http://dx.doi.org/10.3390/en14227577.

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Regulating the frequencies of power grids by controlling electric vehicle charging and discharging, known as vehicle-to-grid (V2G) ancillary services, is a promising and profitable means of providing flexibility that integrates variable renewable energy (VRE) into traditional power systems. However, the ancillary services market is a niche, and the scale, saturation, and time-dependency are unclear when assuming future changes in the power system structure. We studied the marginal value of V2G ancillary services as a balancing capacity of the power system operation on the load-frequency contro

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Marquis, Melinda, Jim Wilczak, Mark Ahlstrom, et al. "Forecasting the Wind to Reach Significant Penetration Levels of Wind Energy." Bulletin of the American Meteorological Society 92, no. 9 (2011): 1159–71. http://dx.doi.org/10.1175/2011bams3033.1.

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Advances in atmospheric science are critical to increased deployment of variable renewable energy (VRE) sources. For VRE sources, such as wind and solar, to reach high penetration levels in the nation's electric grid, electric system operators and VRE operators need better atmospheric observations, models, and forecasts. Improved meteorological observations through a deep layer of the atmosphere are needed for assimilation into numerical weather prediction (NWP) models. The need for improved operational NWP forecasts that can be used as inputs to power prediction models in the 0–36-h time fram

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PARRADO HERNANDO, GONZALO, LUIS JAVIER MIGUEL GONZALEZ, and FERNANDO A. FRECHOSO ESCUDERO. "ANALYSIS OF THE VARIABLE RENEWABLE ENERGY IN THE SPANISH POWER SYSTEM BASED ON KERNEL PROBABILISTIC DISTRIBUTIONS." DYNA 96, no. 1 (2021): 179–85. http://dx.doi.org/10.6036/9892.

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The development of renewable energies has been highlighted as a driver of the energy transition towards a more sustainable society. Despite the well-known benefits in health and regional energy resilience when those sources are leveraged, wind- and solar-based technologies bring about flexibility challenges in the power system. The variability in the generation of energy from renewable sources is probably its greatest weakness. This problem can be alleviated in different ways, but a detailed statistical analysis of the situation in each country is necessary to find the optimal solution in each

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Tantet, Alexis, and Philippe Drobinski. "A Minimal System Cost Minimization Model for Variable Renewable Energy Integration: Application to France and Comparison to Mean-Variance Analysis." Energies 14, no. 16 (2021): 5143. http://dx.doi.org/10.3390/en14165143.

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The viability of Variable Renewable Energy (VRE)-investment strategies depends on the response of dispatchable producers to satisfy the net load. We lack a simple research tool with sufficient complexity to represent major phenomena associated with the response of dispatchable producers to the integration of high shares of VRE and their impact on system costs. We develop a minimization of the system cost allowing one to quantify and decompose the system value of VRE depending on an aggregate dispatchable production. Defining the variable cost of the dispatchable generation as quadratic with a

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Hu, Jing, Robert Harmsen, Wina Crijns-Graus, and Ernst Worrell. "Barriers to investment in utility-scale variable renewable electricity (VRE) generation projects." Renewable Energy 121 (June 2018): 730–44. http://dx.doi.org/10.1016/j.renene.2018.01.092.

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Kiptoo, Mark Kipngetich, Oludamilare Bode Adewuyi, Masahiro Furukakoi, Paras Mandal, and Tomonobu Senjyu. "Integrated Multi-Criteria Planning for Resilient Renewable Energy-Based Microgrid Considering Advanced Demand Response and Uncertainty." Energies 16, no. 19 (2023): 6838. http://dx.doi.org/10.3390/en16196838.

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Weather-driven uncertainties and other extreme events, particularly with the increasing reliance on variable renewable energy (VRE), have made achieving a reliable microgrid operation increasingly challenging. This research proposes a comprehensive and integrated planning strategy for capacity sizing and operational planning, incorporating forecasting and demand response program (DRP) strategies to address microgrid operation under various conditions, accounting for uncertainties. The microgrid includes photovoltaic systems, wind turbines, and battery energy storage. Uncertainties in VREs and

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Kaushik, Ekata, Vivek Prakash, Om Prakash Mahela, Baseem Khan, Adel El-Shahat, and Almoataz Y. Abdelaziz. "Comprehensive Overview of Power System Flexibility during the Scenario of High Penetration of Renewable Energy in Utility Grid." Energies 15, no. 2 (2022): 516. http://dx.doi.org/10.3390/en15020516.

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Increased deployment of variable renewable energy (VRE) has posed significant challenges to ensure reliable power system operations. As VRE penetration increases beyond 80%, the power system will require long duration energy storage and flexibility. Detailed uncertainty analysis, identifying challenges, and opportunities to provide sufficient flexibility will help to achieve smooth operations of power system networks during the scenario of high share of VRE sources. Hence, this paper presents a comprehensive overview of the power system flexibility (PSF). The intention of this review is to pro

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Iung, Anderson Mitterhofer, Fernando Luiz Cyrino Oliveira, and André Luís Marques Marcato. "A Review on Modeling Variable Renewable Energy: Complementarity and Spatial–Temporal Dependence." Energies 16, no. 3 (2023): 1013. http://dx.doi.org/10.3390/en16031013.

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The generation from renewable sources has increased significantly worldwide, mainly driven by the need to reduce the global emissions of greenhouse gases, decelerate climate changes, and meet the environmental, social, and governance agenda (ESG). The main characteristics of variable renewable energy (VRE) are the stochastic nature, its seasonal aspects, spatial and time correlations, and the high variability in a short period, increasing the complexity of modeling, planning, operating, and the commercial aspects of the power systems. The research on the complementarity and dependence aspects

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Liu, Zhanwei, and Xiaogang He. "Balancing-oriented hydropower operation makes the clean energy transition more affordable and simultaneously boosts water security." Nature Water 1, no. 9 (2023): 778–89. http://dx.doi.org/10.1038/s44221-023-00126-0.

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AbstractReservoir hydropower offers a compelling combination of stability and flexibility services for modern water and power grids. However, its operating flexibility is poorly characterized in energy system planning, missing opportunities to cost-effectively uptake variable renewable energy (VRE) for a clean energy transition. In this study, we have developed a fully coupled reservoir operation and energy expansion model to quantify the economic and environmental benefits attained from adaptive hydropower operation in a high VRE future. Our case study of the China Southern Power Grid reveals

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Gotoh, Ryosuke, Tetsuo Tezuka, and Benjamin C. McLellan. "Study on Behavioral Decision Making by Power Generation Companies Regarding Energy Transitions under Uncertainty." Energies 15, no. 2 (2022): 654. http://dx.doi.org/10.3390/en15020654.

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With respect to decision making by companies, normative approaches such as the net present value (NPV) method are widely applied, even though it is known that investors may make non-normative decisions. This study aimed to obtain new information on the decision-making behavior of renewable energy (RE) companies under uncertainty in the energy market, which is not provided by the conventional normative approach. In this study, we designed a novel framework that expressed both normative and non-normative perspectives of decision making, and developed a behavioral decision-making model of a power

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Tantet, Alexis, Marc Stéfanon, Philippe Drobinski, et al. "e4clim 1.0: The Energy for a Climate Integrated Model: Description and Application to Italy." Energies 12, no. 22 (2019): 4299. http://dx.doi.org/10.3390/en12224299.

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We develop an open-source Python software integrating flexibility needs from Variable Renewable Energies (VREs) in the development of regional energy mixes. It provides a flexible and extensible tool to researchers/engineers, and for education/outreach. It aims at evaluating and optimizing energy deployment strategies with higher shares of VRE, assessing the impact of new technologies and of climate variability and conducting sensitivity studies. Specifically, to limit the algorithm’s complexity, we avoid solving a full-mix cost-minimization problem by taking the mean and variance of the renew

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Klansupar, Chalermjit, and Surachai Chaitusaney. "Optimal Sizing of Grid-Scaled Battery with Consideration of Battery Installation and System Power-Generation Costs." Energies 15, no. 13 (2022): 4742. http://dx.doi.org/10.3390/en15134742.

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Variable renewable energy (VRE) generation changes the shape of residual demand curves, contributing to the high operating costs of conventional generators. Moreover, the variable characteristics of VRE cause a mismatch between electricity demand and power generation, resulting in a greater expected energy not supplied (EENS) value. EENS involves an expected outage cost, which is one of the important components of power-generation costs. A utility-scale battery energy storage system (BESS) is popularly used to provide ancillary services to mitigate the VRE impact. The general BESS ancillary-se

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Attachie, Joseph C., Christian K. Amuzuvi, and Godwin Diamenu. "Stochastic Modelling and Stability Analysis of Large-Scale Wind Power Generation System with Dynamic Loads." European Journal of Electrical Engineering 23, no. 5 (2021): 371–80. http://dx.doi.org/10.18280/ejee.230503.

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As a result of dwindling fossil fuel reserves and the negative impact of greenhouse gases (GHGs) on the environment, it is important that the search for a power grid that will comprise of only variable renewable energy (VRE) generation sources such as wind or solar energy which is available everywhere for free is given much attention. The main challenge associated with these sources of energy is their variability and random nature. It is as a result of instability introduced by the VRE generation sources, that is why there is a strict control measures put in place by the regulators as to how m

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Nazaré, Felipe, Luiz Barroso, and Bernardo Bezerra. "A Probabilistic and Value-Based Planning Approach to Assess the Competitiveness between Gas-Fired and Renewables in Hydro-Dominated Systems: A Brazilian Case Study." Energies 14, no. 21 (2021): 7281. http://dx.doi.org/10.3390/en14217281.

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The main challenge with the penetration of variable renewable energy (VRE) in thermal-dominated systems has been the increase in the need for operating reserves, relying on dispatchable and flexible resources. In the case of hydro-dominated systems, the cost-effective flexibility provided by hydro-plants facilitates the penetration of VRE, but the compounded production variability of these resources challenges the integration of baseload gas-fired plants. The Brazilian power system illustrates this situation, in which the development of large associated gas fields economically depends on the o

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Yuliansyah, Rendy, Aditya Idamsyah, Irwan Paundra, and Bambang Priyono. "Techno Economy Comparison of Conventional Generating Unit and Lithium Battery Energy Storage as a Primary Frequency Regulation of Variable Renewable Energy Penetrated Grid System, Case Study: Southern Sulawesi of Indonesia." European Journal of Engineering Science and Technology 4, no. 3 (2021): 25–38. http://dx.doi.org/10.33422/ejest.v4i3.739.

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Integrating higher shares energy mix of variable renewable energy (VRE) technologies, such as wind and solar PV, in the energy transition process presents many challenges in its operation. One of the required services needed in this activity is the Primary Frequency Regulation (PFR). Many studies have studied various ways to provide PFR services, such as using the Conventional Generating Unit (CGU) and Lithium Battery Energy Storage (LiBESS). This paper presents several battery sizing methods used for comparison between the Levelized Cost of Electricity (LCOE) of a CGU and the Levelized Cost o

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Alvarez Guerrero, Jose David, Thomas L. Acker, and Rafael Castro. "Power System Impacts of Electric Vehicle Charging Strategies." Electricity 3, no. 3 (2022): 297–324. http://dx.doi.org/10.3390/electricity3030017.

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This article explores the potential impacts of integrating electric vehicles (EVs) and variable renewable energy (VRE) on power system operation. EVs and VRE are integrated in a production cost model with a 5 min time resolution and multiple planning horizons to deduce the effects of variable generation and EV charging on system operating costs, EV charging costs, dispatch stacks, reserves and VRE curtailment. EV penetration scenarios of the light-duty vehicle fleet of 10%, 20%, and 30% are considered in the RTS-GMLC test system, and VRE penetration is 34% of annual energy consumption. The imp

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Lampung, Alam Tuara. "Tinjauan Pemodelan Sistem Dan Formulasi Economic Dispatch Untuk Sistem Tenaga Listrik Hibrida Berbasis Variable Renewable Energy Dengan Plta Pumped Storage." SUTET 10, no. 1 (2021): 15–28. http://dx.doi.org/10.33322/sutet.v10i1.1167.

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Untuk mendukung program Pemerintah dalam pencapaian target 23% EBT pada bauran energi nasional tahun 2025, salah satu pendekatan yang dapat digunakan adalah memasangkan pemanfaatan sumber energi terbarukan lokal untuk mendukung pengembangan perekonomian lokal di banyak pulau-pulau di Indonesia yang selama ini belum teroptimalkan. Hal ini juga akan mendorong target ekonomi maritim untuk dapat berkontribusi sebesar 9% terhadap PDB nasional pada tahun 2030, dan sekaligus menciptakan sustainability dari saling ketergantungan antara sistem penyediaan energi dan kegiatan ekonomi yang memanfaatkannya

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Kim, Woo-Jung, Yu-Seok Lee, Yeong-Han Chun, and Hae-Seong Jeong. "Reserve-Constrained Unit Commitment Considering Adjustable-Speed Pumped-Storage Hydropower and Its Economic Effect in Korean Power System." Energies 15, no. 7 (2022): 2386. http://dx.doi.org/10.3390/en15072386.

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The Korean government has declared the goal of net-zero-carbon emissions with a focus on renewable energy expansion. However, a high proportion of baseload generators and an increasing proportion of variable renewable energy (VRE) may cause problems in the power system operation owing to the low cycling capability of baseload generators and variability of VRE. To maintain system reliability, the government is planning to construct pumped-storage hydropower (PSH) plants, which can provide flexibility to the system. This study evaluated the operating cost savings obtained by different types of P

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Shulzhenko, S. V. "Statistical processing of wind and solar PV generation variability for assessment of additional power system flexibility." Problems of General Energy 2021, no. 1 (2021): 14–28. http://dx.doi.org/10.15407/pge2021.01.014.

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To solve the actual task of assessing additional flexible generation needed to smooth variable renewable energies (VRE) disturbances in the Power Systems worldwide the original method for statistical processing of wind and solar PV generation variability data was proposed in the article. The proposed method allows processing the historical data of VRE day-by-day and hour-to-hour generation and assessing the levels of potential disturbances this type of generation could cause. These disturbances should be smoothened in the Power System by others, usually conventional generators at least to ensu

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Juma, Denis, Josiah Munda, and Charles Kabiri. "Characterizing Supply Reliability Through the Synergistic Integration of VRE towards Enhancing Electrification in Kenya." International Journal of Engineering and Advanced Technology 13, no. 5 (2024): 60–70. http://dx.doi.org/10.35940/ijeat.e4485.13050624.

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Decentralized electrical power systems, driven by variable renewable energy sources such as solar PV and wind, have the potential to provide accessible and sustainable energy, contributing to the realization of a zero-carbon transition. However, these sources are susceptible to extreme weather conditions, presenting a challenge to the reliability of the power system. With abundant resources and a significant rural population lacking access to electricity, Africa has emerged as a key area for research on variable renewable energy-based electricity generation. Despite this focus, there remains a

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Czapla, Jason P., and M. B. Clennell. "Feasibility study of adiabatic compressed air energy storage in porous reservoirs." APPEA Journal 62, no. 2 (2022): S103—S106. http://dx.doi.org/10.1071/aj21156.

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The Australian electricity sector is undergoing a transformation in which variable renewable energy (VRE) is becoming a dominant generator. VRE sources such as wind and solar have intermittent generation profiles influenced by weather and climate with daily and seasonal variations. To support high penetration rates of VRE, energy storage is required to store energy during times of oversupply and discharge energy during times of under supply. Compressed Air Energy Storage (CAES) is a promising, economic technology to compliment battery and Pumped Hydro by providing storage over a medium duratio

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Rasku, Topi, and Juha Kiviluoma. "A Comparison of Widespread Flexible Residential Electric Heating and Energy Efficiency in a Future Nordic Power System." Energies 12, no. 1 (2018): 5. http://dx.doi.org/10.3390/en12010005.

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Integrating ever-increasing amounts of variable renewable energy (VRE) into the power system could benefit from harnessing widespread residential demand-side management. This paper presents case studies on the potential benefits of power-to-heat (P2H) flexibility and energy efficiency improvements in a hypothetical future Finnish detached housing stock in the year 2030, both as a part of the larger Nordic power system and in an isolated Finnish power system. The housing stock was depicted using two archetype houses modeled using a simple lumped capacitance approach, integrally optimized as a p

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Vakalis, Stergios, Konstantinos Kaffas, and Konstantinos Moustakas. "The water-energy-climate nexus concept of “Hydrobattery”: Storing excess Variable Renewable Energy (VRE) at the Canyon Ferry Dam." Renewable Energy 155 (August 2020): 547–54. http://dx.doi.org/10.1016/j.renene.2020.03.179.

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van Dongen, Caroline, Bernard Bekker, and Amaris Dalton. "Valuation of Pumped Storage in Capacity Expansion Planning—A South African Case Study." Energies 14, no. 21 (2021): 6999. http://dx.doi.org/10.3390/en14216999.

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According to South Africa’s national energy policy, network penetration of variable renewable energy (VRE) generation will significantly increase by 2030. Increased associated network uncertainty creates the need for an additional flexible generation. As the planned VRE is mostly non-synchronous PV and wind generators, additional ancillary services will also be required. Pumped Storage (PS), which is a well-established flexible generation technology with fast ramping capability and the ability to contribute various ancillary services, could help integrate increased VRE penetration on the South

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Mudakir, Mudakir, Aripriharta Aripriharta, and Aji Prasetya Wibawa. "Analysis of battery energy storage system (BESS) performance in reducing the impact of variable renewable energy generation intermittency on the electricity system." Journal of Mechatronics, Electrical Power, and Vehicular Technology 15, no. 2 (2024): 158–76. https://doi.org/10.55981/j.mev.2024.1032.

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Indonesia has set a target to achieve a 23 % share of new and renewable energy (NRE) in its national energy mix by 2025. Sulawesi island has significant wind and solar energy potential, but the integration of these variable renewable energy (VRE) sources, such as solar photovoltaic (PV) and wind turbines (WT), poses challenges due to their fluctuating output. The aim of this study is to analyze the impact of battery energy storage systems (BESS) in reducing the intermittency of solar power generation and improving grid stability in North Sulawesi and Gorontalo. The study uses a combination of

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